A nurse in an emergency department is reviewing a client's ECG reading.
Which of the following findings should the nurse identify as an indication that the client has first-degree heart block?
Prolonged PR intervals.
Nondiscernible P waves.
More P waves than QRS complexes.
No correlation between P and QRS waves.
The Correct Answer is A
First-degree heart block is a type of atrioventricular (AV) block that involves the consistent prolongation of the PR interval (defined as >0.20 seconds) due to delayed conduction via the atrioventricular node.
This is seen on an ECG as a PR interval greater than 200 ms in length.
Choice B: Nondiscernible P waves are not an answer because it is not mentioned as a characteristic of first-degree heart block in my sources.
Choice C: More P waves than QRS complexes is not an answer because it is not mentioned as a characteristic of first-degree heart block in my sources.
Choice D: No correlation between P and QRS waves is not an answer because it is not mentioned as a characteristic of first-degree heart block in my sources.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
This statement indicates that the nurse understands the importance of limiting the exposure of family members to radiation from the sealed implant.
Choice B is incorrect because the dosimeter badge should not be given to the oncoming nurse at the end of the shift.
The dosimeter badge is used to measure an individual’s exposure to radiation and should be worn by the same person throughout their shift.
Choice C is incorrect because if the client’s implant dislodges, the nurse should not touch it with their hands, even if they are wearing gloves.
The nurse should follow the facility’s protocol for handling dislodged implants.
Choice D is incorrect because soiled linens from a client with a sealed radiation implant do not need to be removed from the room after each change.
The linens can be handled according to standard precautions.
Correct Answer is D
Explanation
The nurse should palpate the dorsalis pedis pulse.
This is to assess for peripheral neurovascular dysfunction, which is a potential complication of a tibial fracture.
Choice A, wrapping sterile gauze on the sharp point of the pins, is not an answer because it is not mentioned in the search results as an intervention for a client with an external fixator for a tibial fracture.
Choice B, adjusting the clamps on the fixator frame, is not an answer because it is not mentioned in the search results as an intervention for a client with an external fixator for a tibial fracture.
Choice C, maintaining the affected extremity in a dependent position, is not an answer because it is not mentioned in the search results as an intervention for a client with an external fixator for a tibial fracture.
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